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74ABT16244CSSC Equivalent & Substitute Parts
Part Overview
The 74ABT16244CSSC is a non-inverting buffer IC manufactured by onsemi, featuring 4 elements with 4 bits per element and 3-state output capability. Designed for 4.5V to 5.5V supply operation, this component is classified as obsolete. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Number of Bits per Element | 4 |
| Output Type | 3-State |
| Current - Output High, Low | 32mA, 64mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 48-BSSOP (0.295", 7.50mm Width) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility is determined by the following core parameters:
- Logic Type: Buffer, Non-Inverting (4 elements, 4 bits per element)
- Output Type: 3-State
- Voltage - Supply: 4.5V ~ 5.5V
- Operating Temperature: -40°C ~ 85°C (TA)
- Mounting Type: Surface Mount
- Moisture Sensitivity Level: 1 (Unlimited)
Substitute parts are grouped into two categories based on package compatibility:
Category 1 - Direct Package Match (48-BSSOP / 48-SSOP): Parts maintaining identical package footprint and pinout as the original 74ABT16244CSSC.
Category 2 - Alternative Packages (48-TSSOP / 48-TFSOP / 48-TVSOP): Parts with equivalent electrical specifications but different package geometries. These require PCB layout modification but maintain functional compatibility.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Product Status | Logic Type | Elements / Bits | Output Type | Current High/Low (mA) | Voltage Supply | Temp Range | Package | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| 74ABT16244CSSC | onsemi | Obsolete | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | Not specified |
| SN74ABT16244ADL | Texas Instruments | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | ROHS3 Compliant |
| 74ABT162244DGG,118 | NXP USA Inc. | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | Not specified |
| 74ABT16244ADGG,118 | NXP Semiconductors | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | Not specified |
| SN74ABT162244DGG | Texas Instruments | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | ROHS3 Compliant |
| SN74ABT162244DGGR | Texas Instruments | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | ROHS3 Compliant |
| SN74ABT162244DGVR | Texas Instruments | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TVSOP | ROHS3 Compliant |
| SN74ABT162244DL | Texas Instruments | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | ROHS3 Compliant |
| SN74ABT162244DLR | Texas Instruments | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 12 / 12 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-BSSOP | ROHS3 Compliant |
| SN74ABT16244ADGGR | Texas Instruments | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TSSOP | ROHS3 Compliant |
| SN74ABT16244ADGVR | Texas Instruments | Active | Buffer, Non-Inverting | 4 / 4 | 3-State | 32 / 64 | 4.5V ~ 5.5V | -40°C ~ 85°C | 48-TVSOP | ROHS3 Compliant |
Engineering Selection Recommendations
Direct Replacement (No Layout Changes Required):
SN74ABT16244ADL and SN74ABT162244DL are the primary direct replacements for the 74ABT16244CSSC. Both maintain the 48-BSSOP package footprint and are manufactured by Texas Instruments with active product status and ROHS3 compliance. SN74ABT16244ADL matches the original output current specifications (32mA high, 64mA low), while SN74ABT162244DL operates at reduced output current (12mA high, 12mA low). Selection between these depends on load current requirements.
Alternative Package Options:
For designs where package size reduction is acceptable, Texas Instruments offers SN74ABT16244ADGGR (48-TSSOP) and SN74ABT16244ADGVR (48-TVSOP) with matching output current specifications (32mA high, 64mA low). NXP alternatives include 74ABT16244ADGG,118 (48-TSSOP) with identical current ratings. These alternatives require PCB layout modification but provide equivalent electrical performance.
Compliance Considerations:
All active substitute parts listed carry ROHS3 compliance certification, supporting modern manufacturing and environmental standards. The original 74ABT16244CSSC obsolete status necessitates transition to an active alternative for long-term supply assurance.
Frequently Asked Questions (FAQ)
Q: Can SN74ABT162244DL replace 74ABT16244CSSC directly on the PCB?
A: Yes. SN74ABT162244DL maintains identical 48-BSSOP package geometry and pinout. The primary difference is reduced output current capability (12mA vs. 32mA high, 12mA vs. 64mA low). Verify that your circuit load does not exceed 12mA per output before substitution.
Q: What is the difference between SN74ABT16244ADL and SN74ABT162244DL?
A: Both use the 48-BSSOP package and are direct pin-compatible. SN74ABT16244ADL provides 32mA high and 64mA low output current, matching the original 74ABT16244CSSC specifications. SN74ABT162244DL provides 12mA high and 12mA low output current. Select based on your circuit's current requirements.
Q: Can I use a 48-TSSOP package part instead of 48-BSSOP?
A: Electrically yes, but PCB layout modification is required. The 48-TSSOP package (0.240" width) differs from 48-BSSOP (0.295" width). Footprint, trace routing, and component placement must be updated. Verify pinout compatibility before layout changes.
Q: Are all substitute parts ROHS3 compliant?
A: All active substitute parts listed carry ROHS3 compliance. The original 74ABT16244CSSC (obsolete) does not specify RoHS status. Compliance certification is available for all recommended active alternatives.
Q: What is the impact of using parts with lower output current ratings?
A: Output current determines maximum fan-out and load-driving capability. Parts rated 12mA (high/low) can drive fewer or lighter loads than 32mA/64mA rated parts. Verify your circuit's total output current demand does not exceed the substitute part's rating.
Q: Why are there multiple Texas Instruments part numbers for the same package?
A: Packaging variants (Tube, Tape & Reel, Cut Tape) affect delivery format and handling. SN74ABT16244ADL (Tube), SN74ABT162244DLR (Tape & Reel), and SN74ABT162244DL (Tube) are electrically identical but differ in packaging format. Select based on your procurement and assembly requirements.
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